Yesterday was one of the coldest days ________ I have ever known．

which

that

when

in which

Recently I bought an ancient Chinese vase, ________ was very reasonable．

which price

the price of which

its price

the price of whose

________ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world．

Being separated

Having separated

Having been separated

To be separated

－Did you have a good time at the party?

－Thanks．I appreciated ________ to your home．

to be invited

being invited

to have invited

having invited

Great changes have taken place in that school．It is no longer ________ it was 20 years ago, ________ it was so poorly equipped．

what, when

that, which

what, which

which, that

All the people ________ the meeting were very important．

attending

present

attended

presented

－Is Bob still performing?

－I'm afraid not．He is said ________ the stage already as he has become an official．

to have left

to leave

to have been left

to be left

She ________ for the professor who was ill．

substituted

changed

shifted

replaced

He is ________ with the striking workers．

sympathy

synthetic

sympathetic

sympathize

She is usually ________ to be one of our best artists．

regarded

acknowledged

received

attempted